2008 Joint Annual Meeting (5-9 Oct. 2008): Molecular and Physiological Assays of the Efficacy of 1-MCP at Preventing Adverse Ethylene Effects in Cotton.
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720-8 Molecular and Physiological Assays of the Efficacy of 1-MCP at Preventing Adverse Ethylene Effects in Cotton.



Wednesday, 8 October 2008: 10:45 AM
George R. Brown Convention Center, 372F
Hongwen Su and Scott Finlayson, Soil and Crop Sciences, Texas A&M University, 370 Olsen Blvd, College Station, TX 77843-2474
The phytohormone ethylene can cause adverse effects in plants, including inhibition of shoot elongation and abscission of leaves, flowers and fruits.  1-MCP is a competitive inhibitor of ethylene binding with the ethylene receptors and prevents ethylene responses.  To determine the effectiveness of various 1-MCP delivery systems as an ethylene prophylactic, an assay system was developed that integrated analyses of leaf declination, shoot elongation and ethylene-responsive gene expression.  Using a flow-through controlled growth system, optimal parameters of ethylene treatment in eliciting responses, and of 1-MCP treatment in preventing these responses were determined.  A comparison was made between the effectiveness of gaseous 1-MCP delivery and liquid foliar application.  Data from global gene expression profiling analyses will be discussed.
See more of: Stress Physiology
See more of: C02 Crop Physiology and Metabolism